EP 3620637 A4 20200422 - CONTROL METHOD FOR INTERNAL COMBUSTION ENGINE AND CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE
Title (en)
CONTROL METHOD FOR INTERNAL COMBUSTION ENGINE AND CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE
Title (de)
STEUERUNGSVORRICHTUNG FÜR BRENNKRAFTMASCHINE UND STEUERUNGSVERFAHREN FÜR BRENNKRAFTMASCHINE
Title (fr)
PROCÉDÉ DE COMMANDE POUR MOTEUR À COMBUSTION INTERNE ET DISPOSITIF DE COMMANDE POUR MOTEUR À COMBUSTION INTERNE
Publication
Application
Priority
JP 2017017109 W 20170501
Abstract (en)
[origin: EP3620637A1] According to the present invention, while the wall temperature of an inner circumferential surface (32a) of a cylinder bore (32) is low, the mechanical compression ratio of an internal combustion engine (1) is fixed. Specifically, when a cooling water temperature (Tw) at a water jacket (31a) that is inside a cylinder block (31), which correlates with a cylinder bore wall temperature, is below a prescribed temperature (Twth), the mechanical compression ratio of the internal combustion engine (1) is fixed at a prescribed compression ratio regardless of operating conditions, which keeps a first piston ring (35) from sliding along a corroded portion of the cylinder bore (32) and makes it possible to delay the progress of corrosion.
IPC 8 full level
F02B 75/04 (2006.01); F02D 15/02 (2006.01); F02D 35/02 (2006.01); F02D 41/06 (2006.01)
CPC (source: EP US)
F02B 75/04 (2013.01 - EP US); F02D 15/02 (2013.01 - EP US); F02D 35/026 (2013.01 - EP); F02D 41/06 (2013.01 - EP); F02D 15/04 (2013.01 - US); F02D 37/02 (2013.01 - US); F02D 41/06 (2013.01 - US); F02D 43/00 (2013.01 - US); F02D 2200/021 (2013.01 - EP)
Citation (search report)
- [X] WO 2014119354 A1 20140807 - NISSAN MOTOR [JP]
- [A] JP 2012021459 A 20120202 - IHI CORP
- [A] JP 2007146701 A 20070614 - TOYOTA MOTOR CORP
- [A] JP 2005069131 A 20050317 - NISSAN MOTOR
- See references of WO 2018203360A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
EP 3620637 A1 20200311; EP 3620637 A4 20200422; EP 3620637 B1 20210310; CN 110621860 A 20191227; CN 110621860 B 20201027; JP 6721119 B2 20200708; JP WO2018203360 A1 20191107; US 10815879 B2 20201027; US 2020056537 A1 20200220; WO 2018203360 A1 20181108
DOCDB simple family (application)
EP 17908545 A 20170501; CN 201780090232 A 20170501; JP 2017017109 W 20170501; JP 2019516301 A 20170501; US 201716609323 A 20170501